Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2023 11:13

General

  • Target

    customs declaration form (china translate).exe

  • Size

    347KB

  • MD5

    f6b88b481ab6cdea460737d59ad3dfda

  • SHA1

    eae0e490af400787d6afd2305c9a6609b7dccab3

  • SHA256

    5f918d7bd2348f90d00f38003918dc9e614741d42f7157bff50cfac0e2d4fe06

  • SHA512

    54e17482ce07754023c3a60d4b3b08917a506798ab47c834d9b65a197300067e248fdcb627d303a930c616fd9ce7b4b5ff3e32bddd6646aae004e4716f397f5f

  • SSDEEP

    6144:7pOKFvmdgaAPcWAGKxphVXUdbV10UMSn03EqXHqlXQso/4cmLpTqJjM:gkv+1zbbDUZn00qXe3ux

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\customs declaration form (china translate).exe
    "C:\Users\Admin\AppData\Local\Temp\customs declaration form (china translate).exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3552
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ipconfig /release
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1956
      • C:\Windows\SysWOW64\ipconfig.exe
        ipconfig /release
        3⤵
        • Gathers network information
        PID:1124
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ipconfig /renew
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5092
      • C:\Windows\SysWOW64\ipconfig.exe
        ipconfig /renew
        3⤵
        • Gathers network information
        PID:2692
    • C:\Users\Admin\AppData\Local\Temp\customs declaration form (china translate).exe
      "C:\Users\Admin\AppData\Local\Temp\customs declaration form (china translate).exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\customs declaration form (china translate).exe.log

    Filesize

    927B

    MD5

    4a911455784f74e368a4c2c7876d76f4

    SHA1

    a1700a0849ffb4f26671eb76da2489946b821c34

    SHA256

    264098e15b5b33d425f3b76e45b7976b58f917048125041135f7e60d8151108c

    SHA512

    4617591400409e1930195795a55e20d5f063042bb3e9fd1955099066e507b6ac8a1e3ae54cc42418e2639149b31bf7e58cd5743670d9030a15e29f14d813815d

  • memory/1708-17-0x0000000005980000-0x00000000059E6000-memory.dmp

    Filesize

    408KB

  • memory/1708-16-0x0000000005800000-0x0000000005810000-memory.dmp

    Filesize

    64KB

  • memory/1708-23-0x0000000006B60000-0x0000000006B6A000-memory.dmp

    Filesize

    40KB

  • memory/1708-22-0x0000000006BA0000-0x0000000006C32000-memory.dmp

    Filesize

    584KB

  • memory/1708-15-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/1708-21-0x0000000005800000-0x0000000005810000-memory.dmp

    Filesize

    64KB

  • memory/1708-20-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/1708-19-0x0000000006720000-0x00000000067BC000-memory.dmp

    Filesize

    624KB

  • memory/1708-18-0x0000000006630000-0x0000000006680000-memory.dmp

    Filesize

    320KB

  • memory/1708-11-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3552-7-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/3552-5-0x0000000004BC0000-0x0000000004C00000-memory.dmp

    Filesize

    256KB

  • memory/3552-4-0x0000000004B50000-0x0000000004B90000-memory.dmp

    Filesize

    256KB

  • memory/3552-3-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

    Filesize

    64KB

  • memory/3552-0-0x0000000000170000-0x00000000001CC000-memory.dmp

    Filesize

    368KB

  • memory/3552-9-0x0000000005CA0000-0x0000000006244000-memory.dmp

    Filesize

    5.6MB

  • memory/3552-8-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

    Filesize

    64KB

  • memory/3552-2-0x0000000004A60000-0x0000000004AB8000-memory.dmp

    Filesize

    352KB

  • memory/3552-6-0x0000000004C00000-0x0000000004C4C000-memory.dmp

    Filesize

    304KB

  • memory/3552-14-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/3552-1-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB